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87 lines
2.1 KiB
87 lines
2.1 KiB
// Copyright 2013 The Go Authors. All rights reserved. |
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// Use of this source code is governed by a BSD-style |
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// license that can be found in the LICENSE file. |
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// +build darwin dragonfly freebsd linux netbsd openbsd solaris windows |
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package ipv6 |
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import ( |
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"net" |
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"unsafe" |
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"golang.org/x/net/bpf" |
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"golang.org/x/net/internal/socket" |
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) |
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func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) { |
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n, err := so.GetInt(c) |
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if err != nil { |
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return nil, err |
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} |
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return net.InterfaceByIndex(n) |
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} |
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func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error { |
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var n int |
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if ifi != nil { |
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n = ifi.Index |
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} |
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return so.SetInt(c, n) |
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} |
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func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) { |
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b := make([]byte, so.Len) |
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n, err := so.Get(c, b) |
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if err != nil { |
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return nil, err |
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} |
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if n != sizeofICMPv6Filter { |
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return nil, errOpNoSupport |
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} |
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return (*ICMPFilter)(unsafe.Pointer(&b[0])), nil |
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} |
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func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error { |
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b := (*[sizeofICMPv6Filter]byte)(unsafe.Pointer(f))[:sizeofICMPv6Filter] |
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return so.Set(c, b) |
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} |
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func (so *sockOpt) getMTUInfo(c *socket.Conn) (*net.Interface, int, error) { |
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b := make([]byte, so.Len) |
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n, err := so.Get(c, b) |
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if err != nil { |
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return nil, 0, err |
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} |
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if n != sizeofIPv6Mtuinfo { |
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return nil, 0, errOpNoSupport |
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} |
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mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0])) |
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if mi.Addr.Scope_id == 0 { |
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return nil, int(mi.Mtu), nil |
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} |
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ifi, err := net.InterfaceByIndex(int(mi.Addr.Scope_id)) |
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if err != nil { |
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return nil, 0, err |
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} |
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return ifi, int(mi.Mtu), nil |
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} |
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func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error { |
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switch so.typ { |
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case ssoTypeIPMreq: |
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return so.setIPMreq(c, ifi, grp) |
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case ssoTypeGroupReq: |
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return so.setGroupReq(c, ifi, grp) |
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default: |
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return errOpNoSupport |
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} |
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} |
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func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error { |
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return so.setGroupSourceReq(c, ifi, grp, src) |
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} |
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func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error { |
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return so.setAttachFilter(c, f) |
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}
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